CN114631349A

CN114631349A - Paging indicator

Info

Publication number: CN114631349A
Application number: CN202080076608.6A
Authority: CN
Inventors: H·D·李; P·P·L·洪; K·K·穆克维利
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2019-11-07
Filing date: 2020-11-04
Publication date: 2022-06-14
Also published as: US20210144672A1; WO2021092622A1; US11979852B2; EP4055926A1

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a User Equipment (UE) may receive a reference signal or channel that transmits a paging indicator. The UE may determine whether to monitor a paging control channel that includes a scheduling grant for paging shared channel communications based on the paging indicator. The UE may estimate time or frequency information for receiving the paging control channel based at least in part on the result of the determination, and receive the paging control channel based at least in part on the result of the determination and the estimated time or frequency information, or skip monitoring the paging control channel based at least in part on the result of the determination. Numerous other aspects are provided.

Description

Paging indicator

Cross Reference to Related Applications

This patent application claims priority to the following applications: U.S. provisional patent application No.62/932,266 entitled "PAGING INDICATION" filed on 7/11/2019; and U.S. non-provisional patent application No.16/949,557 entitled "PAGING INDICATION" filed on 3.11.2020, which is hereby expressly incorporated by reference herein.

Technical Field

Aspects of the present disclosure generally relate to wireless communications and to techniques and apparatuses for paging indication.

Background

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing the available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is an enhanced set of Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the third generation partnership project (3 GPP).

A wireless communication network may include a plurality of Base Stations (BSs) capable of supporting communication for a plurality of User Equipments (UEs). A User Equipment (UE) may communicate with a Base Station (BS) via a downlink and an uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in greater detail herein, the BS may be referred to as a node B, gNB, an Access Point (AP), a radio head, a Transmit Receive Point (TRP), a New Radio (NR) BS, a 5G node B, etc.

The above multiple access techniques have been employed in various telecommunications standards to provide a common protocol that enables different user equipment to communicate on a city, country, region, and even global level. New Radios (NR), which may also be referred to as 5G, are an enhanced set of LTE mobile standards promulgated by the third generation partnership project (3 GPP). NR is designed to better integrate with other open standards by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM) on the Downlink (DL), CP-OFDM and/or SC-FDM (e.g., also known as discrete fourier transform spread OFDM (DFT-s-OFDM)) on the Uplink (UL), to better support mobile broadband internet access, and to support beamforming, multiple-input multiple-output (MIMO) antenna techniques, and carrier aggregation. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access techniques and telecommunications standards employing these techniques.

Disclosure of Invention

In some aspects, a method of wireless communication performed by a User Equipment (UE) comprises: receiving a reference signal or channel transmitting a paging indicator; determining whether to monitor a paging control channel including a scheduling grant for paging shared channel communications based on the paging indicator; and estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determining, and receiving the paging control channel based at least in part on the result of the determining and the estimated time or frequency information, or skipping monitoring the paging control channel based at least in part on the result of the determining.

In some aspects, a UE for wireless communication may comprise: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: receiving a reference signal or channel transmitting a paging indicator; determining whether to monitor a paging control channel including a scheduling grant for paging a shared channel communication based on the paging indicator; and estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determining, and receiving the paging control channel based at least in part on the result of the determining and the estimated time or frequency information, or skipping monitoring the paging control channel based at least in part on the result of the determining.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receiving a reference signal or channel transmitting a paging indicator; determining whether to monitor a paging control channel including a scheduling grant for paging a shared channel communication based on the paging indicator; and estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determining, and receiving the paging control channel based at least in part on the result of the determining and the estimated time or frequency information, or skipping monitoring the paging control channel based at least in part on the result of the determining.

In some aspects, an apparatus for wireless communication comprises: means for receiving a reference signal or channel transmitting a paging indicator; means for determining whether to monitor a paging control channel that includes a scheduling grant for paging shared channel communications based on the paging indicator; and means for estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determining, and means for receiving the paging control channel based at least in part on the result of the determining and the estimated time or frequency information, or means for skipping monitoring the paging control channel based at least in part on the result of the determining.

Aspects include, in general, methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and/or processing systems as substantially described herein with reference to and as illustrated by the accompanying figures and description.

The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein (both as to their organization and method of operation), together with associated advantages, will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purpose of illustration and description and is not intended as a definition of the limits of the claims.

Drawings

So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

Fig. 2 is a block diagram conceptually illustrating an example of a base station in a wireless communication network communicating with a UE in accordance with various aspects of the present disclosure.

Fig. 3A is a block diagram conceptually illustrating an example of a frame structure in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 3B is a block diagram conceptually illustrating an example synchronous communication hierarchy in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 4 is a block diagram conceptually illustrating an example slot format with a normal cyclic prefix, in accordance with various aspects of the present disclosure.

Fig. 5 illustrates an example logical architecture of a distributed Radio Access Network (RAN) in accordance with various aspects of the present disclosure.

Fig. 6 illustrates an example physical architecture of a distributed RAN in accordance with various aspects of the present disclosure.

Fig. 7A and 7B are diagrams illustrating examples of paging indications in accordance with various aspects of the present disclosure.

Fig. 8 is a diagram illustrating an example process performed, for example, by a user device, in accordance with various aspects of the present disclosure.

Detailed Description

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the present disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. Moreover, the scope of the present disclosure is intended to cover such an apparatus or method implemented with other structure, functionality, or structure and functionality in addition to or other than the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

Several aspects of a telecommunications system will now be presented with reference to various apparatus and techniques. These apparatus and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, procedures, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

It should be noted that although aspects may be described herein using terms commonly associated with 3G and/or 4G wireless technologies, aspects of the present disclosure may be applied in other generation-based communication systems, such as 5G and beyond (including NR technologies).

Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be implemented. The wireless network 100 may be an LTE network or some other wireless network (e.g., a 5G or NR network). Wireless network 100 may include a plurality of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with User Equipment (UE) and may also be referred to as a base station, NR BS, node B, gNB, 5G node b (nb), access point, Transmit Receive Point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to a coverage area of a BS and/or a BS subsystem serving that coverage area, depending on the context in which the term is used.

The BS may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs having an association with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG)). The BS for the macro cell may be referred to as a macro BS. The BS for the pico cell may be referred to as a pico BS. The BS for the femto cell may be referred to as a femto BS or a home BS. In the example shown in fig. 1, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102 c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "node B", "5G NB" and "cell" may be used interchangeably herein.

In some aspects, the cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of the mobile BS. In some aspects, BSs may be interconnected to each other and/or to one or more other BSs or network nodes (not shown) in wireless network 100 by various types of backhaul interfaces (e.g., direct physical connections, virtual networks, and/or the like using any suitable transport network).

Wireless network 100 may also include relay stations. A relay station is an entity that can receive a data transmission from an upstream station (e.g., a BS or a UE) and send the data transmission to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. In the example shown in fig. 1, relay station 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120 d. The relay station may also be referred to as a relay BS, a relay base station, a relay, etc.

The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, the macro BS may have a high transmit power level (e.g., 5 to 40 watts), while the pico BS, femto BS, and relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

Network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. BSs may also communicate with one another, directly or indirectly, e.g., via a wireless or wired backhaul.

UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be called an access terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular telephone (e.g., a smartphone), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a tablet, a camera, a gaming device, netbooks, smartbooks, ultrabooks, medical devices or appliances, biometric sensors/devices, wearable devices (smartwatches, smartclothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets, etc.)), entertainment devices (e.g., music or video devices, or satellite radio units, etc.), vehicle components or sensors, smart meters/sensors, industrial manufacturing devices, global positioning system devices, or any other suitable device configured to communicate via a wireless or wired medium.

Some UEs may be considered Machine Type Communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, a location tag, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. The wireless node may provide a connection to or to a network (e.g., a wide area network such as the internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered Customer Premises Equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, and the like.

In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular Radio Access Technology (RAT) and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. Frequencies may also be referred to as carriers, channels, etc. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, the UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, etc.), mesh networks, and so on. In this case, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.

As noted above, fig. 1 is provided as an example. Other examples may differ from the example described with respect to fig. 1.

Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120 (which may be one of the base stations and one of the UEs in fig. 1). The base station 110 may be equipped with T antennas 234a through 234T and the UE 120 may be equipped with R antennas 252a through 252R, where T ≧ 1 and R ≧ 1 in general.

At base station 110, transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more Modulation and Coding Schemes (MCSs) for each UE based at least in part on a Channel Quality Indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-Static Resource Partitioning Information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), as well as provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., Primary Synchronization Signals (PSS) and Secondary Synchronization Signals (SSS)). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T Modulators (MODs) 232a through 232T. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232T may be transmitted via T antennas 234a through 234T, respectively. According to various aspects described in greater detail below, the synchronization signal may be generated using position coding to convey additional information.

At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254R, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280. The channel processor may determine Reference Signal Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), Channel Quality Indicator (CQI), and the like. In some aspects, one or more components of UE 120 may be included in a housing.

On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller/processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, CQI, etc.). Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110. At base station 110, the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 (if applicable), and further processed by a receive processor 238 to obtain the decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to a data sink 239 and decoded control information to controller/processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. Network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292.

Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component in fig. 2 may perform one or more techniques associated with paging indications, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component in fig. 2 may perform or direct operations such as process 800 of fig. 8 and/or other processes as described herein.

Memories

242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and/or memory 282 may comprise non-transitory computer-readable media storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and/or UE 120, may perform or direct the operations of, for example, process 800 of fig. 8 and/or other processes described herein. A scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.

In some aspects, UE 120 may include: means for receiving a reference signal or channel transmitting a paging indicator; means for determining whether to monitor a paging control channel that includes a scheduling grant for paging shared channel communications based on a paging indicator; means for estimating time or frequency information for receiving a paging control channel based at least in part on a result of the determining; means for receiving a paging control channel based at least in part on a result of the determining and the estimated time or frequency information; means for skipping monitoring a paging control channel based at least in part on a result of the determining; and so on. In some aspects, such means may include one or more components of UE 120 described in connection with fig. 2, such as controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and/or the like.

As noted above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.

Fig. 3A illustrates an example frame structure 300 for Frequency Division Duplexing (FDD) in a telecommunication system (e.g., NR). The transmission timeline for each of the downlink and uplink may be divided into units of radio frames (sometimes referred to as frames). Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be divided into a set of Z (Z ≧ 1) subframes (e.g., with indices of 0 through Z-1). Each subframe may have a predetermined duration (e.g., 1ms) and include a set of slots (e.g., each subframe is shown in fig. 3A as having 2^mA time slot, where m is a number scheme for transmission, such as 0, 1, 2, 3, 4, etc.). Each slot may include a set of L symbol periods. For example, each slot may include fourteen symbol periods (e.g., as shown in fig. 3A), seven symbol periods, or another number of symbol periods. In case that a subframe includes two slots (e.g., when m ═ 1), the subframe may include 2L symbol periodsWhere 2L symbol periods in each subframe may be assigned indices of 0 to 2L-1. In some aspects, the scheduling units for FDD may be frame-based, subframe-based, slot-based, symbol-based, and the like.

Although some techniques are described herein in connection with frames, subframes, slots, etc., the techniques may be equally applicable to other types of wireless communication structures, which may be referred to in the 5G NR using terms other than "frame," "subframe," "slot," etc. In some aspects, a wireless communication structure may refer to a communication unit defined by a wireless communication standard and/or protocol for periodic time. Additionally or alternatively, configurations other than those of the wireless communication structure shown in fig. 3A may be used.

In some telecommunications (e.g., NR), a base station may transmit a synchronization signal. For example, a base station may transmit a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), etc., on the downlink for each cell supported by the base station. The PSS and SSS may be used by the UE for cell search and acquisition. For example, PSS may be used by a UE to determine symbol timing and SSS may be used by a UE to determine a physical cell identifier and frame timing associated with a base station. The base station may also transmit a Physical Broadcast Channel (PBCH). The PBCH may carry certain system information, e.g., system information supporting the UE for initial access.

In some aspects, a base station may transmit a PSS, a SSs, and/or a PBCH according to a synchronization communication hierarchy (e.g., Synchronization Signal (SS) hierarchy) that includes multiple synchronization communications (e.g., SS blocks), as described below in connection with fig. 3B.

Fig. 3B is a block diagram conceptually illustrating an example SS hierarchy, which is an example of a synchronous communication hierarchy. As shown in fig. 3B, the SS tier may include a set of SS bursts, which may include a plurality of SS bursts (identified as SS burst 0 through SS burst B-1, where B is the maximum number of repetitions of an SS burst that may be sent by a base station). As further shown, each SS burst may include one or more SS blocks (identified as SS block 0 through SS block (b)_{max_SS-1}) Wherein b is_{max_SS-1}Is capable of being carried by SS burstsMaximum number of SS blocks). In some aspects, different SS blocks may be beamformed in different ways. The wireless node may send the set of SS bursts periodically, such as every X milliseconds, as shown in fig. 3B. In some aspects, the set of SS bursts may have a fixed or dynamic length, shown as Y milliseconds in fig. 3B.

The set of SS bursts shown in fig. 3B is an example of a set of synchronous communications, and other sets of synchronous communications may be used in conjunction with the techniques described herein. Further, the SS blocks shown in fig. 3B are examples of synchronous communications, and other synchronous communications may be used in conjunction with the techniques described herein.

In some aspects, an SS block includes resources that carry a PSS, SSs, PBCH, and/or other synchronization signals (e.g., a Third Synchronization Signal (TSS)) and/or synchronization channels. In some aspects, multiple SS blocks are included in an SS burst, and the PSS, SSs, and/or PBCH may be the same between each SS block of the SS burst. In some aspects, a single SS block may be included in an SS burst. In some aspects, an SS block may be at least four symbol periods in length, where each symbol carries one or more of PSS (e.g., occupies one symbol), SSs (e.g., occupies one symbol), and/or PBCH (e.g., occupies two symbols).

In some aspects, as shown in fig. 3B, the symbols of the SS blocks are consecutive. In some aspects, the symbols of the SS block are discontinuous. Similarly, in some aspects, one or more SS blocks of an SS burst may be transmitted in consecutive radio resources (e.g., consecutive symbol periods) during one or more time slots. Additionally or alternatively, one or more SS blocks of an SS burst may be transmitted in non-contiguous radio resources.

In some aspects, an SS burst may have a burst period, whereby a base station may transmit SS blocks of an SS burst according to the burst period. In other words, the SS block may repeat during each SS burst. In some aspects, the set of SS bursts may have a burst set period, whereby the base station may transmit SS bursts of the set of SS bursts according to a fixed burst set period. In other words, an SS burst may be repeated during each set of SS bursts.

The BS may transmit system information (e.g., System Information Blocks (SIBs)) on a Physical Downlink Shared Channel (PDSCH) in certain time slots. The base station may send control information/data on a Physical Downlink Control Channel (PDCCH) in C symbol periods of the slot, where B may be configurable for each slot. The base station may transmit traffic data and/or other data on the PDSCH in the remaining symbol periods of each slot.

As noted above, fig. 3A and 3B are provided as examples. Other examples may differ from the examples described with respect to fig. 3A and 3B.

Fig. 4 shows an example slot format 410 with a normal cyclic prefix. The available time-frequency resources may be divided into resource blocks. Each resource block may cover a set of subcarriers (e.g., 12 subcarriers) in one slot and may include multiple resource elements. Each resource element may cover one subcarrier in one symbol period (e.g., in units of time) and may be used to transmit one modulation symbol, which may be real or complex.

An interlace may be used for each of the downlink and uplink for FDD in certain telecommunication systems (e.g., NR). For example, Q interlaces may be defined with indices of 0 through Q-1, where Q may be equal to 4, 6, 8, 10, or some other value. Each interlace may include slots spaced apart by Q frames. Specifically, the interlace Q may include time slots Q, Q + Q, Q +2Q, etc., where Q ∈ { 0., Q-1 }.

The UE may be located within the coverage of multiple BSs. One of the BSs may be selected to serve the UE. The serving BS may be selected based at least in part on various criteria (e.g., received signal strength, received signal quality, path loss, etc.). The received signal quality may be quantified by a signal-to-noise-and-interference ratio (SNIR), or a Reference Signal Received Quality (RSRQ), or some other metric. The UE may operate in a dominant interference scenario, where the UE may observe high interference from one or more interfering BSs.

Although aspects of the examples described herein may be associated with NR or 5G technologies, aspects of the disclosure may be applied with other wireless communication systems. A New Radio (NR) may refer to a radio configured to operate according to a new air interface (e.g., in addition to an Orthogonal Frequency Division Multiple Access (OFDMA) -based air interface) or a fixed transport layer (e.g., in addition to an Internet Protocol (IP)). In aspects, NR may utilize OFDM with CP (referred to herein as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on the uplink, CP-OFDM may be utilized on the downlink, and support for half-duplex operation using Time Division Duplex (TDD) is included. In aspects, NR may utilize OFDM with CP on the uplink (referred to herein as CP-OFDM) and/or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM), for example, and may utilize CP-OFDM on the downlink and include support for half-duplex operation using TDD. NR may include enhanced mobile broadband (eMBB) services targeting wide bandwidths (e.g., 80 megahertz (MHz) and greater), millimeter wave (mmW) targeting high carrier frequencies (e.g., 60 gigahertz (GHz)), massive MTC (MTC) targeting non-backward compatible MTC technologies, and/or mission critical targeting ultra-reliable low latency communication (URLLC) services.

In some aspects, a single component carrier bandwidth of 100MHz may be supported. The NR resource blocks may span 12 subcarriers having a subcarrier bandwidth of 60 or 120 kilohertz (kHz) in 0.1 millisecond (ms) duration. Each radio frame may include 40 slots and may have a length of 10 ms. Thus, each slot may have a length of 0.25 ms. Each time slot may indicate a link direction (e.g., DL or UL) for data transmission, and the link direction for each time slot may be dynamically switched. Each slot may include DL/UL data as well as DL/UL control data.

Beamforming may be supported and beam directions may be dynamically configured. MIMO transmission with precoding may also be supported. MIMO configuration in DL may support up to 8 transmit antennas, with multi-layer DL transmitting up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE may be supported. Aggregation of multiple cells with up to 8 serving cells may be supported. Alternatively, the NR may support a different air interface than the OFDM-based interface. The NR network may comprise entities such as central units or distributed units.

As noted above, fig. 4 is provided as an example. Other examples may differ from the example described with respect to fig. 4.

Fig. 5 illustrates an example logical architecture of a distributed RAN 500 in accordance with aspects of the present disclosure. The 5G access node 506 may include an Access Node Controller (ANC) 502. ANC may be a Central Unit (CU) of the distributed RAN 500. The backhaul interface to the next generation core network (NG-CN)504 may terminate at the ANC. The backhaul interface to the neighboring next generation access node (NG-AN) may terminate at the ANC. An ANC may include one or more TRPs 508 (which may also be referred to as a BS, NR BS, nodeb, 5G NB, AP, gNB, or some other terminology). As described above, TRP may be used interchangeably with "cell".

The TRP 508 may be a Distributed Unit (DU). A TRP may be attached to one ANC (ANC 502) or more than one ANC (not shown). For example, for RAN sharing, radio as a service (RaaS), AND service-specific AND deployments, a TRP may be connected to more than one ANC. The TRP may include one or more antenna ports. The TRP may be configured to provide services to the UE either individually (e.g., dynamic selection) or jointly (e.g., joint transmission).

The local architecture of the RAN 500 may be used to illustrate fronthaul communications. The architecture may be defined to support a fronthaul solution across different deployment types. For example, the architecture may be based at least in part on the transmitting network capabilities (e.g., bandwidth, latency, and/or jitter).

The architecture may share features and/or components with LTE. According to aspects, the next generation AN (NG-AN)510 may support dual connectivity with NRs. The NG-ANs may share a common fronthaul for LTE and NR.

The architecture may enable cooperation between and among TRPs 508. For example, cooperation may be pre-configured within and/or across the TRP via ANC 502. According to aspects, an inter-TRP interface may not be required/present.

According to aspects, dynamic configuration of the split logic function may exist in the architecture of RAN 500. Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC) or Medium Access Control (MAC) protocols may be adaptively placed at either ANC or TRP.

According to various aspects, a BS may include a Central Unit (CU) (e.g., ANC 502) and/or one or more distributed units (e.g., one or more TRPs 508).

As noted above, fig. 5 is provided as an example. Other examples are possible and may differ from the example described with respect to fig. 5.

Fig. 6 illustrates an example physical architecture of a distributed RAN 600 in accordance with aspects of the present disclosure. A centralized core network unit (C-CU)602 may host core network functions. The C-CU may be centrally deployed. The C-CU functions may be offloaded (e.g., to Advanced Wireless Services (AWS)) in an effort to handle peak capacity.

A centralized RAN unit (C-RU)604 may host one or more ANC functions. Alternatively, the C-RU may locally host core network functions. The C-RU may have a distributed deployment. The C-RU may be closer to the network edge.

A Distributed Unit (DU)606 may host one or more TRPs. The DU can be located at the edge of a Radio Frequency (RF) enabled network.

As noted above, fig. 6 is provided as an example. Other examples may differ from the example described with respect to fig. 6.

In some communication systems (such as 5G), a UE may utilize a low power state to reduce power consumption when, for example, the UE is not scheduled to receive data from a BS on the downlink or transmit data to the BS on the uplink. For example, in Discontinuous Reception (DRX) operation, the UE may periodically enter a low power state (which may be referred to as a sleep state) in which the UE uses less power than in a normal power state (which may be referred to as an awake state). The UE may periodically transition from the low power state to the normal power state to receive signaling from and/or transmit signaling to the BS.

However, transitioning from the low power state to the normal power state may result in increased utilization of power resources relative to remaining in the low power state. In some cases, the UE may transition to a normal power state, but signaling may not be scheduled for the UE. Accordingly, some aspects described herein provide a reference signal or channel that transmits a paging indication. For example, during a first time period, the UE may monitor a reference signal or channel from the BS indicating whether to monitor a downlink channel (e.g., a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH)). In this case, the paging indicator may indicate whether a page is scheduled for transmission to the UE. When a page is scheduled for transmission, the UE may remain in a normal power state to monitor for pages. In contrast, when paging is not scheduled for transmission, the UE may skip switching to a normal power state, e.g., for multiple paging cycles, thereby reducing utilization of power resources.

Fig. 7A and 7B are diagrams illustrating an example 700/700' of a paging indication in accordance with various aspects of the present disclosure. As shown in fig. 7A and 7B, example 700/700' includes BS 110 and UE 120.

As shown in fig. 7A and further by reference numeral 710, BS 110 may transmit and UE 120 may receive a reference signal or channel that includes a paging indicator. For example, during a first period of a DRX cycle, UE 120 may receive a paging indicator that indicates whether UE 120 is to skip switching to a normal power state for one or more subsequent paging cycles. In some aspects, UE 120 may receive information identifying a configuration of time and/or frequency resources for monitoring and receiving reference signals or channels. For example, the UE 120 may determine the paging frame and the paging occasion based at least in part on the paging cycle and a UE identifier of the UE 120. In this case, UE 120 may determine resources for monitoring a reference signal or channel based at least in part on the paging frame, the paging occasion, and a time offset value (e.g., a fixed offset value or a system information configured offset value). In some aspects, the UE 120 may perform time and/or frequency tracking or estimation using a reference signal or channel. In such a case, the UE 120 may receive subsequent communications based at least in part on the execution time and/or frequency tracking or estimation.

In some aspects, BS 110 may quasi co-locate (QCL) a reference signal or channel with a Synchronization Signal Block (SSB). In addition, BS 110 may quasi-co-locate (QCL) the reference signals or channels with the downlink channels. For example, BS 110 may transmit a paging PDCCH/PDSCH quasi-co-located with a reference signal or channel. In this case, there may be multiple resources for reference signals or channels, and one or more resources may be associated with a single SSB, and each resource may correspond to a beam used for transmitting reference signals. Further, the UE 120 may acquire a reception beam for successfully receiving the reference signal and receive the broadcast channel using the beam. Additionally or alternatively, BS 110 may transmit reference signals using narrower beams compared to SSBs. For example, a first beam of reference signals may be located within a second, wider beam of SSBs. In this case, BS 110 may transmit downlink channels on narrow beams to achieve coverage enhancement.

In some aspects, UE 120 may receive a reference signal or channel using information about SSBs based at least in part on BS 110 quasi-co-locating the reference signal with the SSB transmission. For example, the UE 120 may obtain an SSB for determining and/or refining timing synchronization and/or frequency synchronization and use the SSB to derive a receive beam for receiving a reference signal. Additionally or alternatively, the UE 120 may determine time resources, frequency resources, receive beams, etc. for receiving the reference signals and the broadcast channels based on the reference signals.

In some aspects, UE 120 may determine a characteristic of the radio resource management measurement based at least in part on the reference signal. For example, UE 120 may determine to relax radio resource management measurements based at least in part on cell quality by measuring RSRP of reference signals. In such a case, based at least in part on the cell quality satisfying the threshold, the UE 120 may forgo performing one or more neighbor cell measurements, thereby reducing power utilization, utilization of network resources, and/or the like. In this way, the UE 120 avoids delays in switching from the normal power state to the low power state with respect to deriving cell quality from synchronization signals or physical broadcast channel measurements.

As further shown at reference numeral 720, the UE 120 may receive a reference signal including a paging indicator and determine to monitor and receive a page in the next paging cycle, rather than skip monitoring. In this case, UE 120 may track or estimate time and/or frequency resources using the reference signals and may receive communications based at least in part on the tracked or estimated time and/or frequency resources. In contrast, as shown in fig. 7B and by reference numeral 720', the UE 120 may receive a reference signal indicating that the UE 120 will skip monitoring in one or more subsequent DRX cycles, and may abort switching to the normal power state for a second period of time. In this case, UE 120 may forego switching from the low power mode to the normal power mode during the second period of the DRX cycle reserved for paging. Additionally or alternatively, the UE 120 may forgo monitoring the PDCCH and/or PDSCH during the DRX cycle based at least in part on the reference signal. In this manner, when the UE 120 is not scheduled to receive, for example, PDCCH or PDSCH, the UE 120 may reduce power utilization relative to switching to a normal power state. In some aspects, the reference signal or channel may include a paging indicator that identifies a particular number of DRX cycles to skip monitoring. For example, the UE 120 may determine whether to skip monitoring multiple continuous DRX cycles, multiple discontinuous DRX cycles, etc., according to the identified pattern based at least in part on the reference signal.

In some aspects, the UE 120 may receive the reference signal via a periodic transmission. For example, BS 110 may transmit a paging indication associated with a reference signal using a periodic reference signal associated with radio resource management and/or beam refinement for a downlink channel. In this case, the reference signal or channel may include information identifying the skipping of one or more DRX cycles. Additionally or alternatively, UE 120 may receive the reference signal or channel via aperiodic transmission. For example, when a page is scheduled for a paging occasion, BS 110 may transmit a reference signal in conjunction with the page. In contrast, BS 110 may forgo transmission of reference signals when paging is not scheduled for a paging occasion. In this case, the reference signal may only indicate skipping of a single DRX cycle.

In some aspects, the reference signal may include information indicating that there is paging for, for example, a group of UEs. In this case, the UE group may attempt to receive the page, and another UE group not indicated by the reference signal may give up attempting to receive the page. In some aspects, the reference signal may include a sequence or identifier to indicate which UE or UEs will attempt to receive the page.

As noted above, fig. 7A and 7B are provided as examples. Other examples may differ from the examples described with respect to fig. 7A and 7B.

Fig. 8 is a diagram illustrating an example process 800, e.g., performed by a UE, in accordance with various aspects of the present disclosure. The example process 800 is an example in which a UE (e.g., UE 120, etc.) performs operations associated with a paging indication.

As shown in fig. 8, in some aspects, process 800 may include: a reference signal or channel transmitting a paging indicator is received (block 810). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, etc.) may receive a reference signal or channel conveying a paging indicator, as described above.

As further shown in fig. 8, in some aspects, process 800 may include: it is determined whether to monitor a paging control channel that includes a scheduling grant for paging shared channel communications based on the paging indicator (block 820). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, etc.) may determine whether to monitor a paging control channel that includes a scheduling grant for paging shared channel communications based on the paging indicator, as described above.

As further shown in fig. 8, in some aspects, process 800 may include: time or frequency information for receiving a paging control channel is estimated based at least in part on a result of the determination (block 830). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, etc.) may estimate time or frequency information for receiving a paging control channel based at least in part on the results of the determination, as described above.

As further shown in fig. 8, in some aspects, process 800 may include: a paging control channel containing a control message is received based at least in part on a result of the determination and the estimated time or frequency information (block 840). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, etc.) may receive a paging control channel containing a control message based at least in part on the results of the determination, as described above.

As further shown in fig. 8, in some aspects, process 800 may include: monitoring for a paging control channel is skipped based at least in part on a result of the determining (block 850). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, etc.) may skip monitoring the paging control channel based at least in part on the results of the determination.

Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.

In a first aspect, a first paging indicator indicates that skipping monitoring is to occur within a plurality of consecutive paging cycles.

In a second aspect, alone or in combination with the first aspect, the reference signal or channel is a reference signal for beam refinement associated with receiving a downlink channel. In some aspects, the downlink channel comprises at least one of a channel for paging or a channel for system information transmission. In some aspects, the reference signal or channel is a non-periodic reference signal.

In a third aspect, alone or in combination with one or more of the first and second aspects, the reference signal or channel is scheduled to be received based at least in part on a paging message within a paging cycle comprising a first period.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the process 800 includes: determining a paging frame and a paging occasion based at least in part on a UE identifier of a UE; determining a configuration of a paging cycle based at least in part on the paging frame, the paging occasion, and an offset value, wherein the configuration of the paging cycle is included in the first period; and determining time or frequency resources for the reference signal based at least in part on the paging frame or the paging occasion. In some aspects, an offset value is indicated to the UE or defined in a specification.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the downlink channel is quasi-co-located with the reference signal or channel.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the UE is configured to receive a downlink channel based at least in part on a characteristic of a reference signal or channel.

In a seventh aspect, the characteristic is at least one of a time characteristic, a frequency characteristic, a doppler characteristic, a spatial relationship characteristic, a beam selection characteristic, or a beam width characteristic, alone or in combination with one or more of the first to sixth aspects.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the UE is configured to receive the reference signal based at least in part on a characteristic of the synchronization signal block.

In a ninth aspect, the characteristic is at least one of a time characteristic, a frequency characteristic, a doppler characteristic, a spatial relationship characteristic, or a beam selection characteristic, alone or in combination with one or more of the first to eighth aspects.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the UE is configured to perform radio resource management measurements based at least in part on the reference signal or channel.

In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the radio resource management measurement is a measurement of a sequence of demodulation reference signals or channels.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the UE is configured to perform a relaxed radio resource management measurement decision based at least in part on measurements on reference signals or channels.

Although fig. 8 shows example blocks of the process 800, in some aspects the process 800 may include additional blocks, fewer blocks, different blocks, or blocks arranged differently than those depicted in fig. 8. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of various aspects.

As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and/or a combination of hardware and software. As used herein, a "processor" is implemented in hardware, firmware, and/or a combination of hardware and software.

As used herein, meeting a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, and/or the like, depending on the context.

It will be apparent that the systems and/or methods described herein may be implemented in different forms of hardware, firmware, and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting in all respects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to the specific software code-it being understood that software and hardware may be designed to implement the systems and/or methods based, at least in part, on the description herein.

Even if specific combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Indeed, many of these features may be combined in ways not specifically recited in the claims and/or specifically disclosed in the specification. Although each dependent claim listed below may depend directly on only one claim, the disclosure of the various aspects includes a combination of each dependent claim with every other claim in the set of claims. A phrase referring to "at least one of a list of items" refers to any combination of those items, including a single member. For example, "at least one of a, b, or c" is intended to encompass any combination of a, b, c, a-b, a-c, b-c, and a-b-c, as well as multiples of the same element (e.g., any other ordering of a, b, and c), a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b-b, b-b-c, c-c, and c-c-c, or a, b, and c).

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more. Further, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related items and unrelated items, etc.) and may be used interchangeably with "one or more. Where only one item is intended, the phrase "only one" or similar language is used. Further, as used herein, the terms "having," "has," "having," and/or the like are intended to be open-ended terms. Further, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise.

Claims

1. A method of wireless communication performed by a User Equipment (UE), comprising:

receiving a reference signal or channel transmitting a paging indicator;

determining whether to monitor a paging control channel including a scheduling grant for paging shared channel communications based on the paging indicator; and

estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determining, an

Receiving the paging control channel based at least in part on the result of the determination and the estimated time or frequency information, or

Skipping monitoring the paging control channel based at least in part on the result of the determination.

2. The method of claim 1, wherein the paging indicator indicates that the skip monitoring is to occur within one or more consecutive paging cycles.

3. The method of claim 1, wherein the reference signal or channel is a periodic reference signal.

4. The method of claim 1, wherein the reference signal or channel is used for radio resource management.

5. The method of claim 1, wherein the reference signal or channel is a reference signal for beam refinement associated with receiving a downlink channel.

6. The method of claim 5, wherein the downlink channel comprises at least one of a channel carrying paging and a channel carrying system information.

7. The method of claim 1, wherein the reference signal or channel is an aperiodic reference signal.

8. The method of claim 7, in which the aperiodic reference signal is received based at least in part on a paging message being scheduled within a paging cycle.

9. The method of claim 1, further comprising:

determining a paging frame and a paging occasion based at least in part on a UE identifier of the UE and a paging cycle;

determining a configuration of a paging cycle based at least in part on the paging frame, the paging occasion, and an offset value; and

determining time or frequency resources for the reference signal based at least in part on the paging frame or paging occasion.

10. The method of claim 9, wherein the offset value is indicated to the UE or defined in a specification.

11. The method of claim 1, wherein a downlink channel is quasi-co-located with the reference signal or channel.

12. The method of claim 11, wherein the UE is configured to receive the downlink channel based at least in part on a characteristic of the reference signal or channel.

13. The method of claim 12, wherein the characteristic is at least one of a time characteristic, a frequency characteristic, a doppler characteristic, a spatial relationship characteristic, a beam selection characteristic, or a beam width characteristic.

14. The method of claim 1, wherein the UE is configured to receive the reference signal based at least in part on a characteristic of a synchronization signal block.

15. The method of claim 14, wherein the characteristic is at least one of a time characteristic, a frequency characteristic, a doppler characteristic, a spatial relationship characteristic, or a beam selection characteristic.

16. The method of claim 1, wherein the UE is configured to perform radio resource management measurements based at least in part on the reference signal or channel.

17. The method of claim 16, wherein the radio resource management measurement is a measurement of the reference signal or channel.

18. The method of claim 1, wherein the UE is configured to perform a relaxed radio resource management measurement decision based at least in part on measurements of the reference signals or channels.

19. The method of claim 18, in which the UE performs radio resource management measurements at a rate based at least in part on a quality of the reference signal or channel.

20. The method of claim 1, wherein the reference signal or channel is UE group specific.

21. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:

receiving a reference signal or channel transmitting a paging indicator;

determining whether to monitor a paging control channel including a scheduling grant for paging a shared channel communication based on the paging indicator; and

estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determination, an

22. The UE of claim 21, wherein the paging indicator indicates that the skip monitoring is to occur within one or more consecutive paging cycles.

23. The UE of claim 21, wherein the reference signal or channel is a periodic reference signal.

24. The UE of claim 21, wherein the reference signal or channel is used for radio resource management.

25. The UE of claim 21, wherein the reference signal or channel is a reference signal for beam refinement associated with receiving a downlink channel.

26. The UE of claim 25, wherein the downlink channel comprises at least one of a channel carrying paging and a channel carrying system information.

27. The UE of claim 21, wherein the reference signal or channel is an aperiodic reference signal.

28. The UE of claim 27, wherein the aperiodic reference signal is received based at least in part on a paging message scheduled within a paging cycle.

29. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:

one or more instructions that, when executed by one or more processors of a User Equipment (UE), cause the UE to:

receiving a reference signal or channel transmitting a paging indicator;

30. An apparatus for wireless communication, comprising:

means for receiving a reference signal or channel transmitting a paging indicator;

means for determining whether to monitor a paging control channel that includes a scheduling grant for paging shared channel communications based on the paging indicator; and

means for estimating time or frequency information for receiving the paging control channel based at least in part on a result of the determination, an

Means for receiving the paging control channel based at least in part on the result of the determination and the estimated time or frequency information, or

Means for skipping monitoring the paging control channel based at least in part on the result of the determination.